This afternoon I received a package containing 8 packs (32 pairs) of underwear; Fruit of the Loom Boxer Briefs. While they were all purchased from Amazon at the same time, some of the packs were made in El Salvador and others in India. The ones from El Salvador are made of fabric from the US while the Indian ones apparently use domestic fabric.
The difference between the two can be seen in the image above, with the center/top pair being from India and the two side/top pairs being from El Salvador. The Indian fabric is a bit softer with a finer, less ribbed weave. I wonder which version will hold up longer.